As the Goldstone boson associated with lepton number the Majoron is intimately connected and coupled to Majorana neutrinos. At loop level it receives couplings to all other Standard Model particles, including flavor-changing lepton and quark couplings. This makes rare decays a prime hunting ground for these axion-like particles that could ultimately help us to understand the seesaw mechanism.
Evgueni Goudzovski (University of Birmingham)
Dmitrii Kirpichnikov (Russian Academy of Sciences (RU))
Dr Yu-Dai Tsai (Fermilab)
Gaia Lanfranchi (INFN e Laboratori Nazionali di Frascati (IT))
Gilad Perez (Weizmann)
Xabier Cid Vidal (Instituto Galego de Física de Altas Enerxías)
Yotam Soreq (Technion- Israel Institute of Technology (IL))